Alert archive / Alaska / Wind Chill Advisories in 2021

Wind Chill Advisory 1, NWS Juneau, AK

January 26, 2021

NWS Juneau, AK issued this wind chill advisory at Jan 26, 2021, 3:57 AM AKST. It took effect at Jan 27, 2021, 12:00 AM AKST. It was in force for 33 hr.

The area

The counties it named.

The facts

Issued
Jan 26, 2021, 3:57 AM AKST (12:57 UTC)
In effect from
Jan 27, 2021, 12:00 AM AKST
Expired
Jan 28, 2021, 9:00 AM AKST
In force
33 hr
Issued by
NWS Juneau, AK

The text

As transmitted.

778 
WWAK47 PAJK 261257
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
357 AM AKST Tue Jan 26 2021

AKZ018-270100-
/O.NEW.PAJK.WC.Y.0001.210127T0900Z-210128T0900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
357 AM AKST Tue Jan 26 2021

...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT AKST WEDNESDAY NIGHT...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  35 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...From midnight tonight to midnight AKST Wednesday night.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Northeast winds of 15 to 25 mph with gusts
  to 45 mph expected all along the Klondike Highway as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

http://www.weather.gov/juneau
5 follow-up statements
023 
WWAK47 PAJK 262349
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
249 PM AKST Tue Jan 26 2021


AKZ018-271500-
/O.CON.PAJK.WC.Y.0001.210127T0900Z-210128T0900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
249 PM AKST Tue Jan 26 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT AKST WEDNESDAY NIGHT...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  35 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...From midnight tonight to midnight AKST Wednesday night.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Northeast winds of 15 to 25 mph with 
  gusts to 45 mph expected all along the Klondike Highway as 
  well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.

&&

$$

http://www.weather.gov/juneau
783 
WWAK47 PAJK 271351
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
451 AM AKST Wed Jan 27 2021

AKZ018-280100-
/O.CON.PAJK.WC.Y.0001.000000T0000Z-210128T0900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
451 AM AKST Wed Jan 27 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST
TONIGHT...

* WHAT...Very cold wind chills occurring. Wind chills as low as 
  35 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...through midnight AKST Wednesday night.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Northeast winds of 15 to 25 mph with 
  gusts to 45 mph expected all along the Klondike Highway as 
  well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.

&&

$$

http://www.weather.gov/juneau
743 
WWAK47 PAJK 280043
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
343 PM AKST Wed Jan 27 2021

AKZ017-281500-
/O.NEW.PAJK.WW.Y.0007.210128T1800Z-210129T1800Z/
Cape Fairweather to Cape Suckling Coastal Area-
Including the city of Yakutat
343 PM AKST Wed Jan 27 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 9 AM
AKST FRIDAY...

* WHAT...Snow expected. Total snow accumulations up to 8 inches. 

* WHERE...The Northeast Gulf Coast including Yakutat.

* WHEN...From 9 AM Thursday to 9 AM AKST Friday.

* IMPACTS...Travel could be very difficult. 

* ADDITIONAL DETAILS...Snow fall rates expected to be steady from
  Thursday morning to Friday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions call 5 1 1 or visit
511.alaska.gov.

&&

$$

AKZ018-281500-
/O.EXT.PAJK.WC.Y.0001.000000T0000Z-210128T1500Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
343 PM AKST Wed Jan 27 2021

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 6 AM AKST THURSDAY...

* WHAT...Very cold wind chills occurring. Wind chills as low as 
  35 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...Until 6 AM AKST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Northeast winds of 15 to 25 mph with 
  gusts to 45 mph expected all along the Klondike Highway as 
  well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.

&&

$$

http://www.weather.gov/juneau
547 
WWAK47 PAJK 281344
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
444 AM AKST Thu Jan 28 2021


AKZ018-281800-
/O.EXT.PAJK.WC.Y.0001.000000T0000Z-210128T1800Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
444 AM AKST Thu Jan 28 2021

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 9 AM AKST THIS
MORNING...

* WHAT...Very cold wind chills occurring. Wind chills as low as 
  35 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...Until 9 AM AKST this morning.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.

&&

$$

AKZ017-282145-
/O.CON.PAJK.WW.Y.0007.210128T1800Z-210129T1800Z/
Cape Fairweather to Cape Suckling Coastal Area-
Including the city of Yakutat
444 AM AKST Thu Jan 28 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM THIS
MORNING TO 9 AM AKST FRIDAY...

* WHAT...Snow expected. Total snow accumulations up to 8 inches.

* WHERE...The Northeast Gulf Coast including Yakutat.

* WHEN...From 9 AM akst Today until 9 AM AKST Friday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Snow fall rates are expected to increase
  this afternoon and will linger into Friday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling.

&&

$$

http://www.weather.gov/juneau
210 
WWAK47 PAJK 281740
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
840 AM AKST Thu Jan 28 2021


AKZ018-281845-
/O.EXP.PAJK.WC.Y.0001.000000T0000Z-210128T1800Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
840 AM AKST Thu Jan 28 2021

...WIND CHILL ADVISORY WILL EXPIRE AT 9 AM AKST THIS MORNING...

Winds will continue to diminish through the morning with 
temperatures rising slightly. Wind chills will go down to 20 
below zero again overnight.

This will be the final statement on this event.


$$

AKZ017-290300-
/O.CON.PAJK.WW.Y.0007.210128T1800Z-210129T1800Z/
Cape Fairweather to Cape Suckling Coastal Area-
Including the city of Yakutat
840 AM AKST Thu Jan 28 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM AKST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations up to 8 inches.

* WHERE...The Northeast Gulf Coast including Yakutat.

* WHEN...Until 9 AM AKST Friday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Snow fall rates are expected to increase Thursday
  afternoon and will linger into Friday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling.

&&

$$

http://www.weather.gov/juneau

What forecasters said that day

The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Juneau, AK wrote its last area forecast discussion before this wind chill advisory went out at Jan 25, 3:09 PM AKST, 12 hours 48 minutes earlier.

Area forecast discussion, Jan 25, 3:09 PM AKST, 12 hours 48 minutes before
Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
309 PM AKST Mon Jan 25 2021

.SHORT TERM.../Through Tuesday night/ Today brought a mix of
clouds and sun across the panhandle with more clouds in the north
as a weak shorwave is passing through. TAFs have been a challenge,
specifically pinpointing when and where the various cloud decks
will make their appearance. High clouds over the north will likely
limit fog development, while the southern zones have fog
development potential from Monday evening through early Tuesday
morning. Drizzle and flurries were removed from the Monday night
forecast due to the limited moisture with this feature.

Winds will increase dramatically into Tuesday as the pressure
gradient tightens between a high in Canada and a low in the SW
gulf. Expect a strong northerly gale to develop in Lynn Canal
while small crafts develop in the Central and Southern Inner
Channels. Higher gusts are likely out of interior passes and in
typical outflow areas. Strong winds with gusts to 50 mph possible
in Skagway and along the Klondike Highway during this timeframe.
Mountain Wave guidance for downtown Juneau keeps conditions poor
for Taku winds through mid week with weak cross barrier flow,
around 40 kt, and a lack of a critical layer. Gusts to 50 mph are
still possible around downtown Juneau due to gap flow winds from
the tight pressure gradient; however do not expect a mountain wave
to develop at this time. Temperatures will also cool as the
outflow event progesses.

Overall forecast confidence is at or above average for the short
term. Lowest confidence remains in the fog and low cloud
development later this evening.

.LONG TERM.../Wednesday through Sunday/ As of 10pm Sunday. The
"cold air outbreak" will be reaching it's peak mid-week at the
beginning of the extended forecast period. High temperatures in
the teens to upper 20s will be widespread across the panhandle
while low temperatures will generally be in the teens to single
digits. A bigger temperature difference of 10+ degrees is likely
between interior valley locations and windy spots (ie. the
Mendenhall Valley and downtown Juneau). Strong high pressure
over the Yukon and an inverted trough over the inside waters will
cause predominately N-NE outflow winds through the inside waters,
reaching gale force for Northern Lynn Canal. As a result, freezing
spray remains in forecast and was even expanded to more marine
waters. Overall, this is a dry pattern for SE Alaska, so have
kept the POP forecast low.

The Yukon high pressure will shift down into northern B.C.
Wednesday night through Thursday. This will shift the best outflow
to be more out of the eastern interior passes, including potential
for Taku winds. Meanwhile, a low pressure system will move into
the northern gulf from the west Thursday night, increasing said
E-W pressure gradient. A front extending outward from the low
creates the potential for snow along the outer coast as the low
tracks slowly SE Friday into Saturday. Latest models, and their
previous runs, have had more differences with the position and
subsequent track of this low, so have only made minor changes to
this portion of the forecast. But more often than not, the high
pressure and dry air already in place wins out, limiting how far
inland the snow can reach - and may end up just causing increased
clouds. Once the low shifts SE, the cold/dry/northerly pattern
continues.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Strong Wind from Tuesday morning through Tuesday afternoon for
     AKZ025.
     Strong Wind from Tuesday morning through Tuesday afternoon for
     AKZ018-019.
MARINE...Gale Warning for PKZ012-013.
     Small Craft Advisory for PKZ021-022-031>034-041>043-051-052.

&&

BFL/Ferrin

Visit us at http://www.weather.gov/Juneau

The office that day

Everything else NWS Juneau, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 25, 3:42 PM AKSTSmall Craft AdvisoryAJK3 days
Jan 26, 3:40 AM AKSTHeavy Freezing Spray WarningAJK36 hr

Nearby

Wind Chill Advisories in Alaska, 2021Every wind chill advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.